We bought 2 as replacement. As soon as we installed, it was a mess of ink . We try the second one thinking that the first one was defective but exactly the same thing happen with the second time . We have been using this product for a couple of years and this is the first time that this happened to us.

No mess with this toner! They have built in the "do not get this black toner on me!!" request. After have several different machines that need toner this is the easiest cartridge to change. I do not look forward to the day I buy a new fax machine and have to make sure the toner is this easy to work with. I ordered from the store online on a Friday and it was delieved on Monday. Fast delivery and easy to use- does not get better than that!The box got recycled and I took empty toner cartidge back to Staples for recyling.